APA (7th ed.) Citation

Hill, D. S., & Waller, J. M. (1990). Pests and diseases of tropical crops: Field handbook. Longman.

Chicago Style (17th ed.) Citation

Hill, Dennis S., and J. M. Waller. Pests and Diseases of Tropical Crops: Field Handbook. London: Longman, 1990.

MLA (9th ed.) Citation

Hill, Dennis S., and J. M. Waller. Pests and Diseases of Tropical Crops: Field Handbook. Longman, 1990.